Out-of-focus and dot matrix composite lens for myopia control

Abstract

The utility model discloses an out-of-focus and dot matrix composite lens for myopia control, which comprises a lens main body, a correction area, a central optical correction area, a central out-of-focus prevention and control area and a peripheral out-of-focus prevention and control area are arranged in the lens main body, and dot matrix areas are arranged in gaps of the central out-of-focus prevention and control area and the peripheral out-of-focus prevention and control area. And an out-of-focus transition area is arranged between the central optical correction area and the central out-of-focus prevention and control area. Compared with the prior art, the utility model has the advantages that the diameter of the optical correction area is reduced to 8mm, so that the defocus imaging effect is closer to the central area beside the retina macular fovea center, the prevention and control effect is enhanced, the transition area is added in the optical correction area, the initial wearing comfort is improved, the correction area and the transition area are converted more naturally, and the defocus ratio is close to 1: 1; the fusion mechanism of the visual center of the brain is fully utilized, the defocusing effect is ensured, and the definition and the contrast sensitivity required by daily life and learning are also ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of eyeglass lenses, in particular to a defocus and dot matrix composite lens for myopia control. Background Art

[0002] With the development of electronic products in recent years, people have developed myopia from childhood to adulthood, so the corresponding myopia lenses are also constantly developing. Therefore, now people are starting to use myopic defocus lenses, which utilize the myopic defocus principle to correct the central refractive error while utilizing the peripheral relative positive power to correct the peripheral retinal hyperopic defocus of the myopic eye, thereby inhibiting the axial growth and myopia progression induced by the peripheral retinal hyperopic defocus, so as to delay the worsening of vision. Such lenses are widely used in current life. The existing myopic defocus lenses have a uniform medium as the main body. When light passes through, regular changes occur, causing the image to be refracted onto the retina and in front of the retina, thereby correcting the vision while inhibiting the worsening of vision.

[0003] However, the single myopic defocus principle is difficult to adapt to in actual use, and during the movement of the eyeball, in the initial stage of wearing, the discomfort may cause the wearer to feel dizzy, and the myopic defocus lenses in the prior art may result in relatively low clarity and contrast sensitivity when used in daily life and study. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a defocus and dot matrix composite lens for myopia control in view of the deficiencies raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution provided by the utility model is: a defocus and dot matrix composite lens for myopia control, including a lens main body, a correction zone is provided inside the lens main body, a central optical correction zone is provided inside the correction zone, the correction zone includes a central defocus control zone wrapping the central optical correction zone, the correction zone includes a peripheral defocus control zone of the central defocus control zone, a dot matrix zone is provided in the gap between the central defocus control zone and the peripheral defocus control zone, a defocus transition zone is provided between the central optical correction zone and the central defocus control zone, and the defocus points of the central defocus control zone, the peripheral defocus control zone and the defocus transition zone are all arranged in a hexagonal shape.

[0006] Furthermore, the maximum coverage diameter of the correction zone is set at 61 mm, the minimum diameter of the central optical correction zone is set at 6 mm, and the maximum distance of the defocus transition zone is set at 8 mm.

[0007] Furthermore, the number of defocus points in the correction area is 1525, the spacing distance is 1.155 mm, the hexagonal length of the defocus points is 1.155 mm, and the defocus area ratio of the correction area of ​​the lens body is 1:1.

[0008] Furthermore, the defocus diopter of the central defocus prevention and control zone is +3.50D.

[0009] Furthermore, the defocus diopter of the peripheral defocus prevention and control zone is +4.00D.

[0010] Furthermore, the lens body is manufactured using a 0.12D precision gradient system, and the maximum tolerance accuracy is increased to ±0.06D.

[0011] The advantages of the utility model compared with the prior art are: by reducing the diameter of the optical correction zone to 8mm, the defocused imaging effect is brought closer to the central area beside the fovea of ​​the retina, thereby enhancing the prevention and control effect; a transition zone is added to the optical correction zone to improve the comfort of initial wearing; the transition between the correction zone and the transition zone is more natural; the defocus ratio is close to 1:1, and the fusion mechanism of the brain's visual center is fully utilized, which not only ensures the defocus effect, but also ensures the clarity and contrast sensitivity required for daily life and learning; at the same time, the defocus point and the correction zone are set in a hexagonal shape, which can ensure uniform setting and reduce the feeling of dizziness during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 The utility model is a structural schematic diagram of a defocus and dot matrix composite lens for myopia control.

[0013] As shown in the figure: 1. Lens body; 2. Central optical correction area; 3. Central defocus control area; 4. Peripheral defocus control area; 5. Dot matrix area; 6. Defocus transition area. DETAILED DESCRIPTION

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0015] Combined with Figure 1Embodiment 1: A defocus and dot matrix composite lens for myopia control, comprising a lens body 1, wherein the lens body 1 is provided with a correction zone inside, wherein the correction zone is provided with a central optical correction zone 2 inside, wherein the correction zone comprises a central defocus control zone 3 wrapping the central optical correction zone 2, wherein the correction zone comprises a peripheral defocus control zone 4 of the central defocus control zone 3, wherein a dot matrix zone 5 is provided between the central defocus control zone 3 and the peripheral defocus control zone 4, wherein a defocus transition zone 6 is provided between the central optical correction zone 2 and the central defocus control zone 3, wherein the central defocus control zone 3 and the peripheral defocus control zone 4 are provided with a dot matrix zone 5, wherein the central optical correction zone 2 and the central defocus control zone 3 are provided with a defocus transition zone 6 ... The defocus points of the defocus control zone 3, the peripheral defocus control zone 4 and the defocus transition zone 6 are all set in a hexagonal shape, so the correction zone also forms a hexagon, which can ensure that the distribution of the defocus points is more uniform and symmetrical, so that when the eyeball moves, it will be uniform in any direction, thereby reducing the sense of dizziness. The maximum coverage diameter of the correction zone is set to 61mm, the minimum diameter of the central optical correction zone 2 is set to 6mm, and the maximum distance of the defocus transition zone 6 is set to 8mm. This maximum and minimum distance is the distance from the center point of the lens body 1, that is, Figure 1 As shown in the figure, the defocus point is set in a hexagon, so the central optical correction area 2 is not a standard circle. When setting, the central optical correction area 2 is set to 8mm, of which 2mm is set for the defocus transition zone 6. The defocus point of the defocus transition zone 6 is set as 1-2 rings. As shown in the figure, the defocus point of the defocus transition zone 6 is actually one ring, but it is staggered and displayed as a two-ring setting through misalignment.

[0016] Combined with Figure 1 Embodiment 2: A defocus and dot matrix composite lens for myopia control, comprising a lens body 1, wherein a correction zone is provided inside the lens body 1, wherein a central optical correction zone 2 is provided inside the correction zone, wherein the correction zone comprises a central defocus control zone 3 wrapping the central optical correction zone 2, wherein the correction zone comprises a peripheral defocus control zone 4 of the central defocus control zone 3, wherein the number of defocus points in the correction zone is 1525, the spacing distance is 1.155 mm, the hexagonal length of the defocus points is 1.155 mm, the defocus area ratio of the correction zone of the lens body 1 is 1:1, the defocus diopter of the central defocus control zone 3 is +3.50D, the defocus diopter of the peripheral defocus control zone 4 is +4.00D, a dot matrix zone 5 is provided between the gaps of the central defocus control zone 3 and the peripheral defocus control zone 4, a defocus transition zone 6 is provided between the central optical correction zone 2 and the central defocus control zone 3, and the maximum coverage diameter of the correction zone is set to 61 mm, such as Figure 1As shown in the figure, the central defocus prevention and control area 3 and the peripheral defocus prevention and control area 4 are hexagonal, the minimum diameter distance of the central optical correction area 2 is 6mm, the maximum distance of the defocus transition zone 6 is 8mm, and the lens body 1 is manufactured using a 0.12D precision gradient system, and the maximum tolerance accuracy is increased to ±0.06D, which can make vision clearer, more accurate, and binocular vision more balanced.

[0017] Embodiment 1 is a conventional lens setting of a defocus and dot matrix composite lens for myopia control, and embodiment 2 is an enhanced precise data setting of a defocus and dot matrix composite lens for myopia control.

[0018] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.

Claims

1. A defocus and dot matrix composite lens for myopia control, comprising a lens body (1), wherein a correction zone is provided inside the lens body (1), and a central optical correction zone (2) is provided inside the correction zone, characterized in that: The correction zone comprises a central defocus control zone (3) which surrounds the central optical correction zone (2); the correction zone comprises a peripheral defocus control zone (4) of the central defocus control zone (3); a dot matrix zone (5) is provided between the central defocus control zone (3) and the peripheral defocus control zone (4); a defocus transition zone (6) is provided between the central optical correction zone (2) and the central defocus control zone (3); and the defocus points of the central defocus control zone (3), the peripheral defocus control zone (4) and the defocus transition zone (6) are all arranged in a hexagonal shape.

2. A defocus and dot matrix composite lens for myopia control according to claim 1, characterized in that: The maximum coverage diameter of the correction zone is set at 61 mm, the minimum diameter of the central optical correction zone (2) is set at 6 mm, and the maximum coverage diameter of the defocus transition zone (6) is set at 8 mm.

3. The defocus and dot matrix composite lens for myopia control according to claim 1, characterized in that: The number of defocus points in the correction zone is 1525, the spacing distance is 1.155 mm, the hexagonal length of the defocus points is 1.155 mm, and the defocus area ratio of the correction zone of the lens body (1) is 1:

1.

4. The defocus and dot matrix composite lens for myopia control according to claim 1, characterized in that: The defocus diopter of the central defocus prevention and control area (3) is +3.50D.

5. The defocus and dot matrix composite lens for myopia control according to claim 1, characterized in that: The defocus diopter of the peripheral defocus prevention and control zone (4) is +4.00D.

6. The defocus and dot matrix composite lens for myopia control according to claim 1, characterized in that: The lens body (1) is manufactured using a 0.12D precision gradient system, and the maximum tolerance accuracy is increased to ±0.06D.

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